One of our favorite boy band singers has just become a daddy to a baby girl named Brooklyn Elisabeth Lachey! Brooklyn was born to parents Nick and his wife Vanessa Monday evening. The beautiful couple are already parents to 2-year-old son Camden.

Vanessa shared the happy news on her blog Tuesday saying, "She was born January 5th, 2015 at 5:17pm. She weighed in at 7 pounds 15 ounces, is 21 inches long and has already won over all of our hearts. I have been dreaming of this moment for as long as I can remember, the day I was going to meet my little girl. A friend recently told me how magical today was going to be because it's the day I would meet my best friend. I can't even begin to tell you how it felt to hold her in my arms for the very first time. Mommy, Daddy and big brother Cam love you so much already, Brooklyn!"

She also shared a sweet black and white photo of the newborn’s tiny little fingers wrapped around her perfectly manicured hand! Nick and Vanessa said they prepared Camden for being a big brother.

"We've definitely gone over the fact that, 'Hey, baby sister is in mommy's belly,' and he'll kiss the belly, so I think he understands what baby sister means and that that's happening," Nick told E! News. "But I think the truth test is when she arrives and all the attention's not just on him! We'll see how he reacts at that point!"

Vanessa was definitely involved in sharing how her pregnancy was going throughout the nine months and said she was craving coconut oil and coconut water for a while in recent months!

We can’t wait to see pictures of Brooklyn... but with this couple's good looks, it's no surprise they'd have gorgeous kids! Congrats to the happy family of four!